Diploid (2n) or autosomal cells have two copies of each chromosome, unlike germ or haploid (1n) cells which have one copy. Ploidy refers to the number of chromosomes in a cell nucleus, remaining constant after the G phase in humans. Somatic cells undergo mitosis and are not involved in sexual reproduction, while gametocytes or germ cells undergo meiosis to produce four gametes.
Le cellule diploidi (2n) o autosomiche contengono due copie di ciascun cromosoma, mentre le cellule germinali o aploidi (1n) ne contengono una copia. La ploidia è il numero di cromosomi nel nucleo di una cellula e non cambia dopo la fase G negli esseri umani. Le cellule somatiche sono dove avviene la mitosi, e i gametociti o cellule germinali subiscono la meiosi per produrre quattro gameti.
| Text | Diploid(2n) or autosomal cells contain 2 copies of each chromosome Germ or Haploid(1n) cells contain 1 copy of each chromosome ploidy::number of chromosomes in nucleus of a cell, does not change after the G phase in humans Somatic::mitosis occurs here, not involved in sexual reproduction cells gametocytes::meiosis occurs here & results in four gametes or germ cells Homologous::one chromosome from each pair pairs or homologues spermatogonia::male diploid stem cells oogenesis::production of female gametes |
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Tags: biology_2
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